Self-moving cleaning robot, cleaning system, control method, and cleaning method

Abstract

A self-moving cleaning robot comprises a body and a water tank. The water tank includes a tank body having an air duct and a fan accommodation cavity extending from the bottom of the tank body toward the top of the tank body. An opening end of the fan accommodation cavity faces downwards of the tank body. An air inlet is provided on a side wall of the tank body, and an air outlet is provided at the top of the fan accommodation cavity. The air duct is formed in an inner cavity of the tank body, comprising a second channel formed by side walls of the fan accommodation cavity and corresponding portions of side walls of the tank body, and a first channel located in the inner cavity of the tank body between the air inlet and the fan accommodation cavity.

1 . A self-moving cleaning robot, comprising a body and a water tank arranged inside the body, wherein the water tank comprises:
 a box body, an air duct in a cavity of the box body; a fan chamber provided in the cavity of the box body and extending from the bottom of the box body to the top of the box body; an opening of the fan chamber facing downward; an air inlet provided on the box body, and an air outlet provided at the top of the fan chamber;   an air duct, comprising a second channel formed by an enclosing side wall of the fan chamber and a corresponding side wall portion of the box body, and a first channel extending from the air inlet to the fan chamber in the cavity of the box body.   
     
     
         2 . The self-moving cleaning robot according to  claim 1 , wherein the air inlet and the fan chamber are located on opposite sides of the box body. 
     
     
         3 . The self-moving cleaning robot according to  claim 1 , wherein the cavity of the box body is divided into separated clean water tank and sewage tank; the air duct and the fan chamber are located in the sewage tank. 
     
     
         4 . The self-moving cleaning robot according to  claim 3 , wherein a separating portion is provided in the cavity of the box body, the separating portion extends along an extending direction of at least a portion of a side wall of the box body, and divides the cavity of the box body into the sewage tank and the clean water tank. 
     
     
         5 . The self-moving cleaning robot according to  claim 3 , wherein the box body comprises sequentially engaged upper shell, middle shell, and lower shell; wherein the middle shell is a hollow structure, and grooves are provided at edge positions of the middle shell and/or the upper shell, the grooves of the middle shell and the upper shell form the clean water tank; the upper shell, middle shell, and lower shell enclose the sewage tank. 
     
     
         6 . The self-moving cleaning robot according to  claim 5 , wherein the fan chamber passes through the middle shell, and a gap is formed between the top of the fan chamber and the upper shell; the fan chamber, upper shell, middle shell, and lower shell enclose the sewage tank. 
     
     
         7 . The self-moving cleaning robot according to  claim 6 , wherein an inlet connected to the clean water tank and a drain connected to the sewage tank are provided at the top of the upper shell. 
     
     
         8 . The self-moving cleaning robot according to  claim 1 , wherein a wind-blocking mechanism is provided inside the water tank; the bottom of the wind-blocking mechanism is lower than the top of the fan chamber; the wind-blocking mechanism is configured to make airflow in the air duct bypass from the bottom of the fan chamber. 
     
     
         9 . The self-moving cleaning robot according to  claim 8 , wherein the wind-blocking mechanism is provided at a position where the first channel communicates with the second channel, and extends downward from the top of the box body. 
     
     
         10 . The self-moving cleaning robot according to  claim 1 , wherein the cavity of the water tank is provided with a dust collection device docked with the air inlet, and the dust collection device is constructed to filter foreign matter from water vapor entering from the air inlet. 
     
     
         11 . The self-moving cleaning robot according to  claim 10 , wherein the cavity of the water tank is provided with a chamber for installing the dust collection device, and a cover plate is mounted at an opening position of the chamber, and a detent mechanism is provided in the chamber; the detent mechanism has a first position and a second position; when the dust collection device is removed, the detent mechanism moves to the first position higher than a mounting surface of the cover plate; when installing the dust collection device, the dust collection device pushes the detent mechanism to rotate to the second position lower than the mounting surface of the cover plate. 
     
     
         12 . The self-moving cleaning robot according to  claim 11 , wherein the detent mechanism comprises a cam rotatably connected to the box body, and a torsion spring that biases the cam to the first position; the detent mechanism further comprises a pressed portion connected to the cam, and the dust collection device is provided with a pressing portion corresponding to the pressed portion; the pressing portion is constructed to cooperate with the pressed portion to rotate the cam from the first position to the second position. 
     
     
         13 . The self-moving cleaning robot according to  claim 1 , wherein a first gate preloaded at the air inlet position is provided on the box body; a lifting portion is provided on the body, the lifting portion is configured to lift the first gate when the water tank is loaded into the body to open the air inlet. 
     
     
         14 . The self-moving cleaning robot according to  claim 1 , wherein a second gate is provided at the air outlet; the second gate is configured to close the air outlet under elastic force, and move to open the air outlet under a negative pressure of the air duct. 
     
     
         15 . A water tank, comprising:
 a box body, having an air duct in a cavity of the box body; a fan chamber provided in the cavity of the box body and extending from the bottom of the box body towards the top of the box body; an opening end of the fan chamber facing downwards of the box body; an air inlet provided on a side wall of the box body, and an air outlet provided at the top of the fan chamber;   an air duct in the cavity of the box body, comprising a second channel enclosed by a surrounding side wall of the fan chamber and a corresponding side wall of the box body, and a first channel located in the cavity of the box body from the air inlet to the fan chamber.   
     
     
         16 . (canceled) 
     
     
         17 . A self-moving cleaning robot, comprising a body and mounted thereon:
 a cleaning device constructed for cleaning a working surface;   a first air duct, with its inlet adjacent to the cleaning device, and constructed to extract sewage from the working surface cleaned by the cleaning device;   a sewage tank constructed to contain sewage after cleaning the working surface, with a second air duct provided in the sewage tank;   a fan assembly with a third air duct;   wherein: the first air duct and the third air duct are respectively connected to the second air duct; water vapor extracted by the first air duct enters the second air duct of the sewage tank, with liquid dropping into the sewage tank, while gas is discharged through the third air duct of the fan assembly.   
     
     
         18 . The self-moving cleaning robot according to  claim 17 , wherein the cleaning device is arranged near the front of the body, and the fan assembly is arranged near the rear of the body. 
     
     
         19 . The self-moving cleaning robot according to  claim 18 , further comprising driving wheels provided on the body, the driving wheels being located behind the cleaning device. 
     
     
         20 . The self-moving cleaning robot according to  claim 19 , wherein the bottom of the body is equipped with two swivel casters, the swivel casters being positioned on the body between the cleaning device and the driving wheels, and distributed on opposite sides of the body. 
     
     
         21 . The self-moving cleaning robot according to  claim 17 , further comprising a clean water tank provided on the body, the clean water tank being configured to supply cleaning liquid to the cleaning device. 
     
     
         22 - 107 . (canceled)